package com.zzz.servlet;

import jakarta.servlet.ServletContext;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.io.IOException;

/*
 * @author zzr
 * @date: 2025/07/26  20:01
 * @description:
 */
@WebServlet("/servlet3")
public class Servlet3 extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 删除应用域中数据
        ServletContext application = req.getServletContext();
        application.removeAttribute("keyA");

    }
}
